16541.云南降水資料的均一性檢驗(yàn)與訂正研究

1、獨(dú)創(chuàng)性聲明本人聲明所呈交的論文是我個(gè)人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。除了文中特別加以標(biāo)注和致謝的地方外，論文中不包含其他人或集體已經(jīng)發(fā)表或撰寫過(guò)的研究成果，對(duì)本文的研究做出貢獻(xiàn)的集體和個(gè)人均已在論文中作了明確的說(shuō)明并表示了謝意。研究生簽名：皇』蘊(yùn)金日論文使用和授權(quán)說(shuō)明期：坦!蘭：壘：』本人完全了解云南大學(xué)有關(guān)保留、使用學(xué)位論文的規(guī)定，即：學(xué)校有權(quán)保留并向國(guó)家有關(guān)部門或機(jī)構(gòu)送交學(xué)位論文和論文電子版；允許論文被查閱或借閱；學(xué)校

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3、mateseriesisthebasisforconductingandresearchingthecharacteristicsofclimatechange，especiallytheresearchingwithregardtotheregionaldistributionandextremeclimatechangeThispaperusesthestandardnormaltest(SNHT)methodwhichiscurr

4、entlywidelyusedinprecipitationhomogeneitytest，thelatestimprovedPMFT(penalizedmaximalFtest)andPMT(penalizedmaximalTtest)methods，theranktest(MannKendall)methodandthemigratingmetadataofstationstostudyannualandrrmnthlyprecip

5、itationhomogeneityofYunnan122nationallevelgroundobservationstationsfrom1961to2011Besides，usingtheSNHTratioandmatching(QM)correctingmethodsforcorrectionanalysisFurthermore，analyzetherainfallvariationcharacteristicsofYunNa

6、npast50yearswithreviseddataThemainconclusionsareasfollows：(1)InYunNanprovince，thereareexistingnonuniformsequencesinannualandmonthlyprecipitationTheimprotantreasonleadingtononuniformsequenceinannualandmonthlyprecipitation

7、Canbeseenfromthemigration(2)SNHT，PMT，Mann—KendallthreekindsofmethodsarealsoeffectivefortheannualprecipitationhomogeneitytestThetestingeffectofPMTmethodisbetterthanthatofSNHTPMFT，PMTtwokindsofmethodsisalsosuitableforourpr

8、ovincemonthlyprecipitationhomogeneitytest(3)UsingSNHTratioandQMtwomethodsforcorrectingnonhomogeneousannualprecipitation，thetwokindsofmethodsforcorrectionhavemoreconsistentresultsUsingQMmethodforcorrectingnonhomogeneousmo

9、nlyprecipitation，itshowsthatthecorrectionquantityishigherinlargeprecipitationtimeContrastingbeforeandaftercorrectingresultofprecipitationdata，itfindsthatcorrectioncallimproveuniformityofnonhomogeneoussequence，andcomparin